The NTSB has shared strong new airport surveillance video showing the separation of the left engine from the plane.
Questions remain as the NTSB investigates the deadly plane crash that killed former NASCAR driver Greg Biffle and his family
All six people injured in a gas line explosion and fire that leveled at least one home near Hayward on Thursday are expected to survive. Three of the victims had minor injuries and three had more serious injuries but were listed in stable condition, officials said.
A preliminary report from the NTSB reveals the medical helicopter that crashed on Highway 50 in Sacramento last month lost power moments after it took off from UC Davis Medical Center.
All 67 people on board Flight 5342 and the helicopter were killed when they collided as the jet approached Reagan National.
The NTSB concluded three days of investigative hearings on Friday.